Recently, immiscible electrolyte-based liquid–liquid biphasic systems have received significant attention for the construction of membrane-free batteries. The liquid–liquid interface of these biphasic systems separates the catholyte and anolyte and functions as a natural barrier, thus eliminating the need for a membrane.
While membrane-free batteries have been successfully demonstrated in static batteries, membrane-free batteries in authentic flow modes with high energy capacity and high cyclability are rarely reported. Here, we present a biphasic flow battery with high capacity employing organic compound in organic phase and zinc in aqueous phase.
These results highlight the potential of the Membrane-Free Batteries based on ABS as a new energy storage technology by overcoming some technical hurdles of the conventional RFB related to membrane issues, corrosive electrolytes or expensive and limited metallic reactants.
The power density of the membrane-free RFBs can be further improved by decreasing the distance between electrodes and increasing the ionic conductivity of electrolytes. This work opens a new avenue of using membrane-free flow batteries for affordable large-scale energy storage.
Hence, there is an urgent need to develop membrane-free batteries that use flowable nonaqueous electrolytes with high voltage and energy density. In this work, we report an all-nonaqueous biphasic membrane-free battery that shows high voltage and energy density under both static and flow conditions.
The liquid–liquid interface of these biphasic systems separates the catholyte and anolyte and functions as a natural barrier, thus eliminating the need for a membrane. Unlike the case for laminar-flow batteries, the biphasic membrane-free approach allows for the design of flow batteries with higher power and capacity.
Membrane materials for energy production and storage
Ion exchange membranes are widely used in chemical power sources, including fuel cells, redox batteries, reverse electrodialysis devices and lithium-ion batteries. The general requirements for them are high ionic conductivity and selectivity of transport processes. Heterogeneous membranes are much cheaper but less selective due to the secondary porosity with large pore …
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Membranes in non-aqueous redox flow battery: A review
Redox flow battery (RFB) is promising in grid-scale energy storage, and potentially applicable for facilitating the harvest of the intermittent renewable power sources, like wind and solar, and stabilizing the power grid. Early RFBs are based on aqueous electrolytes and the all-vanadium as well as Zn/Br systems have been demonstrated in close ...
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Development and Challenges of Biphasic Membrane‐Less Redox Batteries …
This review introduces one of the representative membrane-less battery types, Biphasic membrane-less redox batteries that eliminate the IEMs according to the principle of solvent immiscibility and realizes the phase splitting in a thermodynamically stable state.
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Sulfonated poly(ether-ether-ketone) membranes with intrinsic ...
We report a molecularly engineered hydrocarbon ion-exchange membrane with interconnected subnanometer channels that enable fast and selective ion transport and boost the energy efficiency and operational stability of redox flow batteries. This work presents a pathway for developing high-performance membranes for redox flow batteries.
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High-energy and low-cost membrane-free chlorine flow battery
Grid-scale energy storage is essential for reliable electricity transmission and renewable energy integration. Redox flow batteries (RFB) provide affordable and scalable …
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New battery holds promise for green energy
Apr. 5, 2022 — Scientists have created a battery designed for the electric grid that locks in energy for months without losing much storage capacity. It''s a step toward …
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Eliminating friction in batteries could boost clean …
A molecular membrane that allows select ions to cross with almost no friction could significantly boost the performance of flow batteries, fuel cells, and other devices critical to the world''s ...
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Polysulfide-based redox flow batteries with long life and low …
The development of aqueous redox flow batteries (ARFBs) has been plagued by high material costs and poor operating stability. Here the authors report a membrane design to enable polysulfide-based ...
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Sulfonated poly(ether-ether-ketone) membranes with intrinsic ...
We report a molecularly engineered hydrocarbon ion-exchange membrane with interconnected subnanometer channels that enable fast and selective ion transport and …
Learn More
A Bioinspired Membrane with Ultrahigh Li
NASICON-type materials are nonporous crystalline materials (NCM) with the chemical structure of A x M y (BO 4) 3, consisting of corner-sharing MO 6 octahedra and BO 4 tetrahedra that assemble to form a robust …
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A comprehensive review of separator membranes in lithium-ion batteries …
Lithium-ion batteries (LIBs) have been the leading power source in consumer electronics and are expected to dominate electric vehicles and grid storage due to their high energy and power densities, high operating voltage, and long cycle life [1].The deployment of LIBs, however, demands further enhancement in energy density, cycle life, safety, and …
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New battery holds promise for green energy
Apr. 5, 2022 — Scientists have created a battery designed for the electric grid that locks in energy for months without losing much storage capacity. It''s a step toward batteries that can...
Learn More
High-energy and low-cost membrane-free chlorine flow battery
Grid-scale energy storage is essential for reliable electricity transmission and renewable energy integration. Redox flow batteries (RFB) provide affordable and scalable solutions for...
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Layered double hydroxide membrane with high hydroxide …
Membranes with fast and selective ions transport are highly demanded for energy storage devices. Layered double hydroxides (LDHs), bearing uniform interlayer galleries and abundant hydroxyl groups ...
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Critical aspects of membrane-free aqueous battery based on …
Recently, we presented a revolutionary Membrane-Free Battery based on organic aqueous/nonaqueous immiscible electrolytes that eludes both separators and vanadium compounds. Here, we demonstrate the feasible application of this archetype in Aqueous Biphasic Systems (ABS) acting as an unprecedented Total Aqueous Membrane-Free Battery ...
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New polymer membrane boosts solid-state EV batteries'' …
CATL launches new battery packs with 373-mile range, targets 30,000 swap stations . Bojan Stojkovski. 3 days ago. 0. 1. Science. 🌟. 500-million-year-old Ecdysozoan fossil embryos found in China ...
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Critical aspects of membrane-free aqueous battery based on two ...
Recently, we presented a revolutionary Membrane-Free Battery based on organic aqueous/nonaqueous immiscible electrolytes that eludes both separators and vanadium …
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Development and Challenges of Biphasic …
This review introduces one of the representative membrane-less battery types, Biphasic membrane-less redox batteries that eliminate the IEMs according to the principle of solvent immiscibility and realizes the phase …
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Enhanced Vanadium Redox Flow Battery Performance with New …
Vanadium redox flow batteries (VRFBs) depend on the separator membrane for their efficiency and cycle life. Herein, two amphoteric ion exchange membranes are synthesized, based on sulfonic acid group-grafted poly(p-terphenyl piperidinium), for VRFBs ing ether-free poly(p-terphenyl piperidine) (PTP) as the polymer matrix, and sodium 2 …
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A membrane-free, aqueous/nonaqueous hybrid redox flow battery
A membrane-free redox flow battery with high energy density is presented. The designed flow battery delivers a capacity retention of 94.5% over 190 cycles. Operando UV–visible and FT-IR spectroscopies are performed to elucidate capacity decay mechanism.
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Anion exchange membranes with high power density and energy …
Membrane development in organic redox flow batteries (ORFBs) is of significant importance. Herein, we designed a series of anion exchange membranes made from poly(p-phenylene oxide) (PPO) with different degrees of functionalization, cationic moieties and crosslinking degrees.We tested them in a N,N,N-2,2,6,6-heptamethylpiperidinyl oxy-4 …
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Zwitterionic cellulosic membrane as a new separator with …
Separators are regarded as an essential component of lithium-ion batteries (LIBs) due to their critical roles in the electrochemical performance and safety of these batteries. The purpose of this study was to examine the structural and electrochemical properties of a new separator based on zwitterionic cellulose (Cell). The free radical polymerization method was …
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A New Nonaqueous Flow Battery with Extended Cycling
Nonaqueous flow batteries hold promise given their high cell voltage and energy density, but their performance is often plagued by the crossover of redox compounds. In this study, we used permselective lithium superionic conducting (LiSICON) ceramic membranes to enable reliable long-term use of organic redox molecules in nonaqueous flow cells ...
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Eliminating friction in batteries could boost clean energy storage
A molecular membrane that allows select ions to cross with almost no friction could significantly boost the performance of flow batteries, fuel cells, and other devices critical to the world''s ...
Learn More
Membranes in non-aqueous redox flow battery: A review
Redox flow battery (RFB) is promising in grid-scale energy storage, and potentially applicable for facilitating the harvest of the intermittent renewable power sources, …
Learn More
A New Nonaqueous Flow Battery with Extended …
Nonaqueous flow batteries hold promise given their high cell voltage and energy density, but their performance is often plagued by the crossover of redox compounds. In this study, we used permselective lithium …
Learn More
Development of high-voltage and high-energy membrane-free
In this work, we report an all-nonaqueous biphasic membrane-free battery that shows high voltage and energy density under both static and flow conditions.
Learn More
A membrane-free, aqueous/nonaqueous hybrid redox flow battery
A membrane-free redox flow battery with high energy density is presented. The designed flow battery delivers a capacity retention of 94.5% over 190 cycles. Operando …
Learn More
Ion exchange membranes: New developments and applications
Ion exchange membranes (IEMs) have great potential in diverse applications and play prominent roles in addressing energy and environment related issues. Over the past decade, the development of IEMs has attracted much research attention in terms of materials, preparation and applications, due to their academic and industrial values. In this review, the …
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